not too much really going to keep it as a tow pig. I have done the windows and visors, looking to upgrade lights front and rear and get the wheels cleaned up and swap to some 265's.
long term if I really find the need I would consider a sas with a d60 for some 4x4 action. and I would consider that only because this is a lower mile truck that is in pretty darn good shape and I have the right amount of money into it. ( paid $1,200 and put $500 into calipers, rotors, pads ect) so less than 2k total in a 165k mile truck.